umptekite

碱闪正长岩

词形变化

umptekites 复数 umptekites

释义与例句

n.
  1. 1.

    A syenitic rock consisting of microperthite, arfvedsonite, aegirine and, possibly, nepheline.

    可数 不可数 化学 地质

    The rock-mass in which this umptekite form of hornblende occurs may therefore be called umptekite gabbro.